Thesis (DR. P.H.)--University OF MICHIGAN.

Thesis (DR. P.H.)--University OF MICHIGAN.

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Tez (Tıpta Uzmanlık) - Süleyman Demirel Üniversitesi, Tıp Fakültesi, Çocuk Sağlığı ve Hastalıkları Anabilim Dalı, 2006. / Bibliyografya var.

abstract: ABSTRACT In terms of prevalence, human suffering and costs dengue infections are the most important arthropod-borne viral disease worldwide. Dengue virus (DENV) is a mosquito-borne flavivirus and the etiological agent of dengue fever and dengue hemorrhagic fever. Thus, development of a safe and efficient vaccine constitutes an urgent necessity. Besides the traditional strategies aim at generating immunization options, the usage of viral vectors to deliver antigenic stimulus in order to elicit protection are particularly attractive for the endeavor of a dengue vaccine. The viral vector (MVvac2) is genetically equivalent to the currently used measles vaccine strain Moraten, which adds practicality to my approach. The goal of the present study was to generate a recombinant measles virus expressing structural antigens from two strains of DENV (DENV2 and DENV4) The recombinant vectors replication profile was comparable to that of the parental strain and expresses either membrane bound or soluble forms of DENV2 and DENV4 E glycoproteins. I discuss future experiments in order to demonstrate its immunogenicity in our measles-susceptible mouse model. / Dissertation/Thesis / M.S. Biology 2013

Measles immunization coverage in Namibia has not yet reached the WHO target of 90% in all provinces and districts, particularly in Luderitz district. The study aimed to determine the factors associated with the uptake of measles immunization among children in Luderitz district. A quantitative cross-sectional study was conducted among 150 parents/caregivers and their children who visited Luderitz clinic during July 2019 to August 2019. A developed questionnaire collected data on the several factors including child-related ,health service related and the perception of parents/caregivers. Data was analysed using STATA 14. Measles immunization uptake was 61% and significantly associated with child’s age (p=0.001) and gender (p=0.003), parents/caregivers age (p≤0.0001), gender (p=0.021), marital status (p≤0.0001) and employment status (p=0.009). Barriers to measles immunization were mainly inconvenient vaccination time (44%) and forgetfulness (25%) while suggested cues to action, were sending the reminders (30%), providing immunization the whole day (40%) and health education and promotion. / Health Studies / M.A. (Nursing Science)

Measles is a highly contagious virus that can affect the entire population if an effective immunisation programme is not in place. This study was aimed at determining the measles immunisation coverage and the dropout rate among children aged between 6 months and 14 years and at assessing factors associated with caregivers’ knowledge and perception of, and attitude towards the measles immunisation programme. Between 14 May 2018 and 31 July 2018, a descriptive, cross-sectional study design was conducted using simple random sampling to sample 381 caregivers of children at nine public health facilities at Tshwane Sub-district 2, Hammanskraal town. Data were collected by means of a structured questionnaire and observational checklist, and analysed using IBM SPSS version 23.0. Overall, the measles immunization coverage was 95.8% (365/381) and the MCV1-MCV2 dropout rate was 4.1%. The association between educational level and employment status (correlation coefficient=0.157**, p=0.0002), measles knowledge (correlation coefficient=-0.244**, p=0.000), immunization importance (correlation coefficient=-0.194**, p=0.000) and measles vaccine schedule (correlation coefficient=-0.138**, p=0.007) were found to be significant at p<0.05. The findings in this study revealed that caregivers’ positive attitude towards, and knowledge of measles immunisation programme resulted in high measles immunisation coverage and low dropout rate. It is recommended that continuous positive immunisation education about the benefits and importance be emphasized in order to increase immunisation uptake. / Health Studies / M. P. H.

A infecção é causa de morbimortalidade no paciente com insuficiência renal crônica (IRC), facilitada pela uremia, que leva a resposta imune insuficiente, inclusive após a vacinação. Foram avaliadas a situação vacinal e a presença de anticorpos para sarampo e varicela, de 83 crianças e adolescentes com IRC. A adesão dos pacientes às vacinas foi BCG 100%, poliomielite 98,8%, DPT 97,6%, sarampo monovalente 96,4%, tríplice viral 88%, hepatite B 68,7%. Ausência de anticorpos para sarampo e varicela ocorreu em 14,5% e 26,5% dos pacientes. A susceptibilidade ao sarampo em vacinados, predominou acima de seis anos (P < 0,00001) e à varicela (infecção natural) abaixo de sete anos (P < 0,001). O renal crônico pediátrico deve receber esquema vacinal amplo, com avaliação periódica de títulos de anticorpos / Infections are a cause of morbidity and mortality in chronic renal failure (CRF) patients, facilitated by uremia, which promotes a deficient immune response and hinders response to vaccination. We evaluated the immunization status and antibody titers against measles and varicella in 83 CRF children and adolescents. Adhesion to vaccination was 100% BCG, 98,8% poliomyelitis, 97,6% DPT, 96,4% measles, 88% MMR, 68,7% hepatitis B. Non-detectable antibodies against measles and varicella occurred in 14,5% and 26,5% patients. Susceptibility to measles, after vaccination, increased above 6 years (P < 0,00001) and to varicella (natural infection), below seven years of age (P < 0,001). Pediatric CRF patients should receive a robust immunization program with periodic antibody titer assessment

Fatores associados com falhas na cobertura da vacinação contra o sarampo na cidade de São Paulo foram estudados por meio de entrevistas com pais ou responsáveis por 122 crianças de até cinco anos. Observou-se que a população conhece a doença e identifica a vacina com a idéia de proteção, mas não cumpre o calendário de vacinação e atrasa as doses da vacina contra o sarampo. Idade, região de origem ou de residência, status familiar ou nível educacional não mostraram associação com o cumprimento do calendário obrigatório (uma dose da vacina contra o sarampo deve ser aplicada dos 9 aos 11 meses e a segunda, aos 15 meses). A televisão é o meio de comunicação que mais informa os entrevistados sobre as Campanhas Nacionais de Multivacinação e o cartão de vacinação foi identificado como uma das vias de comunicação utilizadas para informar sobre a vacinação fora das Campanhas, na rotina. No entanto, nenhum meio de comunicação identificado no estudo pôde, significativamente, promover a mudança de comportamento da indife rença para o compromisso com o cumprimento do calendário, ou seja, adesão. A única variável significativamente relacionada com o atraso na vacinação, de até 20 dias, foi o sentimento de dó de aplicar injeções nas crianças (p = 0,08). Crianças brasileiras têm de visitar o posto de saúde para receber, até cinco anos de idade, 19 vacinas, 12 até o primeiro ano. O estudo deixa claro que não há adesão ao calendário proposto para vacinação contra o sarampo, apesar de ser esta a proposição das Campanhas Nacionais de Multivacinação e da vacinação de rotina / Risk factors associated with failure to receive measles vaccine were studied in eight districts of São Paulo city, Brazil. Parents or carers of 122 children were interviewed about their perception and understanding about the disease anda about measles vaccination, a kind of knowledge that can be acquired through vaccination communication campaigns or from personal communication (from the doctors, nurses of the health care center or friends). Population description factors were also identified. Results analysis shows that neither age, region of origin or residence, marital status nor educational level were related to taking or not taking measles vaccines adequately. Most of the people remembered about having being informed about the last annual vaccination campaign by television, but no communication channel was significantly associated with vaccination status. Answers to questions about knowing the disease or not or knowing the vaccine or not, when analysed alone, did not show any association with taking measles vaccines at the time indicated by health agencies. However, the results showed that when parents felt pity for their children receiving shots, they delayed the vaccination for at least 20 days. Since families visit the health center at least seven times before children complete five years of age and since most of the children does not take the measles vaccine in the exactly recommended day, but delay or anticipate the shots, it is clear that there is no compliance to the recommended government\'s measles vaccination schedule (first dose at 9 and second at 15 months of age), although this is the message that annual communication campaigns and interpersonal communication try to pass

A infecção é causa de morbimortalidade no paciente com insuficiência renal crônica (IRC), facilitada pela uremia, que leva a resposta imune insuficiente, inclusive após a vacinação. Foram avaliadas a situação vacinal e a presença de anticorpos para sarampo e varicela, de 83 crianças e adolescentes com IRC. A adesão dos pacientes às vacinas foi BCG 100%, poliomielite 98,8%, DPT 97,6%, sarampo monovalente 96,4%, tríplice viral 88%, hepatite B 68,7%. Ausência de anticorpos para sarampo e varicela ocorreu em 14,5% e 26,5% dos pacientes. A susceptibilidade ao sarampo em vacinados, predominou acima de seis anos (P < 0,00001) e à varicela (infecção natural) abaixo de sete anos (P < 0,001). O renal crônico pediátrico deve receber esquema vacinal amplo, com avaliação periódica de títulos de anticorpos / Infections are a cause of morbidity and mortality in chronic renal failure (CRF) patients, facilitated by uremia, which promotes a deficient immune response and hinders response to vaccination. We evaluated the immunization status and antibody titers against measles and varicella in 83 CRF children and adolescents. Adhesion to vaccination was 100% BCG, 98,8% poliomyelitis, 97,6% DPT, 96,4% measles, 88% MMR, 68,7% hepatitis B. Non-detectable antibodies against measles and varicella occurred in 14,5% and 26,5% patients. Susceptibility to measles, after vaccination, increased above 6 years (P < 0,00001) and to varicella (natural infection), below seven years of age (P < 0,001). Pediatric CRF patients should receive a robust immunization program with periodic antibody titer assessment